TED

Today's TED video was about Oliver Salks and how he looked deeper into what causes hallucination and what it really is because he said that none really found out what it was and what caused it. He said when he looked deeper into hallucination, he found out about an old lady who was turned blind in the past 5 years and but one day she started seeing things but not normal things, she said she saw people in South Africa and cats and dogs walked towards her and a building encased by snow. He said he hasn't found out what caused it and what really happens when a person hallucinates but he would look into it.
THEND